Answer:
Step-by-step explanation
Step 1: multiply the coefficient a and the constant c. Given that the general expression of a parabolic equation is ax^2+bx+c
3*5=15
Step 2: examine the coefficient b and try to find 2 numbers which you can multiply to get 15, add or subtract and get - 8
In this Case: - 3*-5=15 and - 3+(-5)= - 8
Step3:
You separate the equation in terms of the two factors you have found
3x^2-3x-5x+5=0
Step 4:Factorise
3x(x-1)-5(x-1)=0
(3x-5)(x-1)=0
Answer:
x ≤3
Step-by-step explanation:
2(4+ 2x)≥ 5x+ 5
distribute
8+4x ≥ 5x+ 5
Subtract 4x from each side
8+4x-4x≥ 5x-4x+ 5
8 ≥ x+ 5
Subtract 5 from each side
8-5 ≥ x+ 5-5
3 ≥ x
x ≤3
#1 is 2 X 10 to the 4th power
#2 is America because America has 20,000 a year and UK has 10,000 a year. The difference between them is 10,000 kilograms a year
Answer:
16/3 or 5.3
Step-by-step explanation:
